Here is the full list of all 70 Mighty No. 9 achievements.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 3 boss battle.
Complete the Water Plant stage without being frozen.
Achieve all FINE PLAY! technical bonuses in the Robot Factory boss battle.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 4 boss battle.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 5 boss battle.
Complete any stage without absorption combos or technical bonuses.
Attack and absorb enemies 5 times in the air before landing.
Complete any stage without using a ReXelection or missing an attack.
Complete Mighty No. 9 on the 9th.
Attack the final boss with every single Mighty Number ability.
Complete any stage without taking damage.
Complete any stage by jumping only 30 times or less.
Complete any stage without pressing normal movement inputs for longer than 1 sec. at a time.
Get defeated by a boss at less than 10% health.
Complete any stage with a 100% absorption rate.
Achieve an A rank or higher and 100% Xel absorption rate result.
Achieve an S rank result.
Don't attack for the first 30 seconds of a boss battle.
Complete the game without restarting on HARD difficulty.
Complete the game within 120 minutes.
Complete the game on HARD difficulty.
Score 1,000,000 points in total.
Ascend 100m without touching anything.
Complete the game on HYPER difficulty.
Get 50 100% Absorption combos in a row.
Complete every AMAZING! technical bonus.
Complete any stage without using healing items.
Achieve a WONDERFUL! technical bonus.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 2 boss battle.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 8 boss battle.
Drop 100m without touching anything.
Achieve all FINE PLAY! technical bonuses in the Opening Stage boss battle.
Witness every helping event by Mighty Numbers.
Complete any stage by dashing only 9 times or less.
Complete the City stage without taking damage.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 7 boss battle.
Complete the game on NORMAL difficulty.
Achieve all FINE PLAY! technical bonuses in the Last Stage boss battle.
Get more than 10 game overs in your play lifetime.
Complete a stage with Call.
Achieve all FINE PLAY! technical bonuses in the Prison boss battle.
Complete 8 main stages and rescue all Mighty Numbers.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 6 boss battle.
Get 40 100% Absorption combos in a row.
Get 30 100% Absorption combos in a row.
Defeat Mighty No. 5 before he detonates his special attack.
Get 20 100% Absorption combos in a row.
Maintain ability boosts for 60 seconds in any stage.
Activate all ability boosts at the same time.
Score 100,000 points in total.
Defeat any Mighty Number without letting them heal.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 1 boss battle.
Complete any stage with just a single death.
Score 10,000 points in total.
Complete the opening stage.
Get 10 100% Absorption combos in a row.
Get 5 100% Absorption combos in a row.
Get 3 100% Absorption combos in a row.
Complete every SPRINTER! technical bonus.
Complete every QUICK CLEAR! And NICE CLEAR! technical bonus.
Complete the game within 60 minutes.
Complete the Factory stage within 9 minutes with all transformations.
Complete any stage with Beck's feet touching the ground for no more than 1 second.
Beat the final boss with zero lives remaining and low health.
Defeated a boss with 1% or less health on Beck.
Defeat all Mighty Numbers with only normal attacks.
Defeat all bosses with only normal attacks.
Complete all themes in single-player Challenge Mode.
Complete Boss Rush Mode for the first time.
Complete Boss Rush Mode in less than 20 minutes.